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Electronic Principles

Electronic Principles
Holes are the minority carriers in which type of semiconductor?

None of these
Extrinsic
Intrinsic
n-type
p-type

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Electronic Principles
How much current flows through a 60-W light bulb that is operating at 120 V?

0.083333333333333
None of these
7200 A
0.5A
180 A

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Electronic Principles
A dielectric material is:

a good conductor of magnetic fields
a good conductor
a poor conductor of electrostatic fields
a good insulator
None of these

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Electronic Principles
The direction of electron current flow is:

from positive to negative
from negative to positive
from right to left
from neutral to positive
None of these

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Electronic Principles
A certain power transformer has a turns ratio of 5. What voltage can you expect at the secondary winding when you apply 120 V to the primary winding?

600 V
None of these
4.73
24 V
0.4 V

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Electronic Principles
If a load resistance is 1 kW, a stiff voltage source has a resistance of

less than 10 Ohm
Less than 100 k Ohm
More than 100 k Ohm
At least 10 Ohm
None of these

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